It seems that your message was bouncing in the mail server for a while...

If there's interest (and you are not already working on a
visual interface editor for IUP), I can publish it when it's ready.

Great news. We once build a Visual LED editor, but after a while many
users think that it was easier to write the LED code instead of using the
editor, so it was discontinued. IUPLUA has the same kind of use, so we
build a simple interface to prototype dialogs writing code and testing, it
is the iuplua executable.

We also developed a Visual Lua application, but we did not have the time
to go on with it. I can send you the code so it can make things easier for
you. (Note: it uses Lua 3.2)

Since IUP uses abstract layout a visual interface editor is something
not immediate. Once you got yours running I will be glad to take a look.